Figure 1. Generalized map of Oregon emphasizing the regional geologic, physiographic, and tectonic framework of Newberry Volcano. (After Walker and MacLeod, 1991). Locations of High Cascade volcanoes are identified as follows: MH = Mt. Hood, MJ = Mt.

1
Figure 1. Generalized map of Oregon emphasizing
the regional geologic, physiographic, and
tectonic framework of Newberry Volcano. (After
Walker and MacLeod, 1991). Locations of High
Cascade volcanoes are identified as follows MH
Mt. Hood, MJ Mt. Jefferson, MW Mt.
Washington, TS Three Sisters, CL Crater Lake.
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Figure 2. Generalized geologic map and
photographic overview of Newberry Volcano (after
Jensen, 2000). Top photo shows central caldera
region and related cinder-cone field in
foreground (red outlines). Bottom photo is an
aerial view of southeast cinder cone field.
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Figure 3. Map showing distribution of the two
morphometric classes of cinder cones identified
by Taylor et al. (2003), as derived by analysis
of 10-m digital elevation models. Group I cones
(younger n 42) are statistically
characterized by the following avg. cone slope
18.7o, avg. cone height 127.7 m, and avg. cone
height-to-width ratio 0.19. Group II cones
(older n 140) are characterized by avg. cone
slope 12.8o, avg. cone height 66.1 m, and
avg. cone height-to-width ratio 0.14.
Morphometric differences between cone classes are
statistically significant at the 95 confidence
interval. Refer to Taylor et al. (2003) for a
more comprehensive summary of techniques and
results.